Brake-shoe.



No; 647,045. Patented Apr. l0, I900. A. L. STBEETEFL BRAKE SHOE.

(Applinatmn filed Oct 22, 1899.)

(No Model.)

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STATES PATENT OFFICE.

ALFRED L. STREETER, OF CHICAGO, ILLINOIS.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 647,045, dated April10, 1900. Application filed October 28, 1899- Seriallq'o. 785,034. (Nomodel.)

To all whom it may concern:

Be it known that I, ALFRED L. STREETER, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented an Improved Brake- Shoe, of which the following is aspecification.

This invention relates to brake-shoes, and relates particularly tobrake-shoes of the gen eral type heretofore patented to me by LettersPatent of the United States No. 595,588, dated December 14, 1897,comprising a castiron body portion and a strengthening-plate secured tothe back thereof.

The object of the invention is to provide means to prevent-theattaching-lug of the shoe from breaking 0%, thus allowing the body ofthe shoe to fall when the body portion of the shoe approaches the limitof its wear.

To this end my invention consists in providing lugs, preferably formedintegral with the strengthening-plate, which are embedded in theattaching-1n g and serve to connect said attaching-lug securely to saidstrengtheningplate even when the bodyportion of the shoe is entirelyworn away, so as to expose said strengthening-plate at the face of saidshoe. Said lugs will preferably be wider at their outer ends than attheir inner ends and will preferably be disposed at an angle relativelyto each other in the direction of their length.

In the accompanying drawings a brakeshoe embodying my invention is fullyillustrated.

Figures 1 and 3 are side Views partly in section, of brake-shoes ofmyinvention, showing slightly-diiferent forms of strengtheningplate; andFigs. 2 and 4.- are transverse sectional views on the lines 2 2 and 4 4of Figs. 1 and 3, respectively.

Referring now to the drawings, A designates a body portion of thebrake-shoe, and A a strengthening-plate, usually steel or wrought-iron,secured to the back thereof, preferably by dovetailing the edges thereofinto said body portion of the shoe, which can be conveniently andeconomically effected by beveling the edges of said plate and castingthe body of the shoe around it. In both forms of shoe shown theattaching-lugs A are formed integral with the body portions A thereof.

The strengthening-plate A (shown in Figs. 1 and 2 of the drawings) islike that shown in said Letters Patent No. 595,588, issued to meDecember 14, 1897, being but slightly narrower than the body of the shoeand being recessed or cut away at opposite sides, as shown at a, to forma connection of desired size and strength between said attaching-lug andthe body portion of the shoe.

The strengthening-plate shown in. Figs. 3 and 4 of the drawings issomewhat narrower than the body of the brake-shoe, the longi tudinaledges thereof being continuousthat is, not being recessed.

The attaching lugs are secured to the strengthening-plates A by lugs orprojections a, preferably formed integral with saidstrengthening-plates, which are embedded in said attaching-lugs.

In the preferable construction shown there is a lug a at each side ofthe shoe. Preferably, also, said lugs a are wider at their cuter than attheir inner ends and diverge from each other in the direction of theirlengths. With this construction it is obvious that said lug a will besecured in the attaching-lugs A by what may be described asa doubledovetail, making a very strong connection between the plates A and saidattaching-lugs A and effectually preventing said attaching lugs A frombreaking off or becoming detached, even if the cast-iron body portion Aof the shoe is entirely worn away, all in the manner desired.

I claim- 1. In a brake-shoe, the combination with a body portion, astrengthening-plate and an attaching-lug, of a projection or projectionsonsaid strengtheningplate embedded in said attaching-lug, substantiallyas described.

2. In a brake-shoe, the combination with a body portion, astrengthening-plate and an attaching-lug, of a projection or projectionson said strengthening-plate embedded in said attaching-lug, saidprojection or projections being wider at their outer than at their innerends, substantially as described.

3. In a brake-shoe, the combination with a body portion, astrengthening-plate and an attaching-lug,of projections on saidstrengthening-plate embedded in said attaching-lug, said projectionsextending at an angle, relavided with recesses at its sides to form aconnection of desired strength between said attaching=lug and the bodyof the shoe, of projections on said strengthening-plate which areembedded in said attaching-lug,substantia1ly as described.

In testimony that I claim the foregoing as 20 my invention I havehereunto set my hand this 21st day of October, 1899.

ALFRED L. STREETER. Witnesses:

O. J. BROUGHTON, J. H. FEAMBAOH.

